<template>
	<view>
		<!-- 使用自定义组件 -->
		<my-search :bgcolor="'#c00000'" :radius="12" ></my-search>
		<view class="scroll-view-container">
			<!-- 左侧的滚动视图区域 -->
			<scroll-view class="left-scroll-view" scroll-y :style="{ height: wh + 'px' }">
				<view v-for="(item, i) in cateList" :key="i">
					<view :class="['left-scroll-view-item', i == active ? 'active' : '']" @click="changeActive(i)">{{ item.cat_name }}</view>
				</view>
			</scroll-view>
			<!-- 右侧的滚动视图区域 -->
			<scroll-view class="right-scroll-view" scroll-y :style="{ height: wh + 'px' }" :scroll-top="scrollTop">
				<view class="cate-lv2" v-for="(item2, i2) in cateLevel2" :key="i2">
					<view class="cate-lv2-title">/ {{ item2.cat_name }} /</view>
					<!-- 动态渲染三级分类的列表数据 -->
					<view class="cate-lv3-list">
						<!-- 三级分类 Item 项 -->
						<view class="cate-lv3-item" v-for="(item3, i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
							<!-- 图片 -->
							<!-- <image src="https://api-ugo-web.itheima.net/full/2fb113b32f7a2b161f5ee4096c319afedc3fd5a1.jpg"></image> -->
							<image :src="item3.cat_icon"></image>
							<!-- 文本 -->
					 	<text>{{ item3.cat_name }}</text>
						</view>
					</view>
				</view>
			</scroll-view>
		</view>
	</view>
</template>

<script>
	import badgeMix from '@/mixins/tabbar-badge.js'
export default {
	mixins:[badgeMix],
	data() {
		return {
			wh: 0,
			cateList: [],
			active: 0,
			cateLevel2: [],
			scrollTop:1
		};
	},
	onLoad() {
		const sysInfo = uni.getSystemInfoSync();
		this.wh = sysInfo.windowHeight-50;
		this.getCateList();
	},
	methods: {
		async getCateList() {
			const res = await uni.$http.get('/api/public/v1/categories');
			if (res.data.meta.status != 200) return uni.$showMsg();
			this.cateList = res.data.message;
			this.cateLevel2 = res.data.message[0].children;
		},
		changeActive(i) {
			this.active = i;
			this.cateLevel2 = this.cateList[i].children;
			// this.scrollTop=0
			this.scrollTop=this.scrollTop==0?1:0
		},
		gotoGoodsList(item3){
			uni.navigateTo({
				url:'/subpkg/goods_list/goods_list?cid=' + item3.cat_id+'&query='+item3.cat_name
			})
		}
	}
};
</script>

<style lang="scss">
.scroll-view-container {
	display: flex;
	.left-scroll-view {
		width: 240rpx;
		.left-scroll-view-item {
			line-height: 120rpx;
			background-color: #f7f7f7;
			text-align: center;
			font-size: 12px;
			&.active {
				background-color: #ffffff;
				position: relative;
				&::before {
					content: ' ';
					display: block;
					width: 3px;
					height: 30px;
					background-color: #c00000;
					position: absolute;
					left: 0;
					top: 50%;
					transform: translateY(-50%);
				}
			}
		}
	}
	.right-scroll-view {
		.cate-lv2-title {
			font-size: 12px;
			font-weight: bold;
			text-align: center;
			padding: 15px 0;
		}
		.cate-lv3-list {
		  display: flex;
		  flex-wrap: wrap;
		
		  .cate-lv3-item {
		    width: 33.33%;
		    margin-bottom: 10px;
		    display: flex;
		    flex-direction: column;
		    align-items: center;
		
		    image {
		      width: 60px;
		      height: 60px;
		    }
		
		    text {
		      font-size: 12px;
		    }
		  }
		}
	}
}
</style>
